/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:49:30,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:49:30,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:49:30,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:49:30,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:49:30,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:49:30,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:49:30,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:49:30,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:49:30,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:49:30,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:49:30,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:49:30,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:49:30,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:49:30,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:49:30,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:49:30,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:49:30,109 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:49:30,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:49:30,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:49:30,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:49:30,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:49:30,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:49:30,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:49:30,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:49:30,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:49:30,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:49:30,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:49:30,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:49:30,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:49:30,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:49:30,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:49:30,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:49:30,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:49:30,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:49:30,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:49:30,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:49:30,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:49:30,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:49:30,188 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:49:30,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:49:30,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:49:30,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:49:30,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:49:30,189 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:49:30,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:49:30,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:49:30,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:49:30,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:49:30,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:49:30,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:49:30,193 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:49:30,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:49:30,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:49:30,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:49:30,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:49:30,692 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:49:30,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2020-09-04 17:49:30,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2060eee/42173745276d44ea99cf0946472fe706/FLAGcf96ad9f0 [2020-09-04 17:49:31,349 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:49:31,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gcnr2008.i [2020-09-04 17:49:31,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2060eee/42173745276d44ea99cf0946472fe706/FLAGcf96ad9f0 [2020-09-04 17:49:31,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c2060eee/42173745276d44ea99cf0946472fe706 [2020-09-04 17:49:31,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:49:31,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:49:31,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:49:31,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:49:31,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:49:31,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:49:31" (1/1) ... [2020-09-04 17:49:31,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e48a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31, skipping insertion in model container [2020-09-04 17:49:31,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:49:31" (1/1) ... [2020-09-04 17:49:31,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:49:31,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:49:31,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:49:31,951 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:49:31,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:49:31,994 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:49:31,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31 WrapperNode [2020-09-04 17:49:31,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:49:31,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:49:31,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:49:31,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:49:32,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31" (1/1) ... [2020-09-04 17:49:32,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31" (1/1) ... [2020-09-04 17:49:32,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31" (1/1) ... [2020-09-04 17:49:32,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31" (1/1) ... [2020-09-04 17:49:32,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31" (1/1) ... [2020-09-04 17:49:32,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31" (1/1) ... [2020-09-04 17:49:32,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31" (1/1) ... [2020-09-04 17:49:32,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:49:32,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:49:32,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:49:32,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:49:32,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:49:32,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:49:32,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:49:32,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:49:32,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:49:32,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:49:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:49:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:49:32,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:49:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:49:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:49:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:49:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:49:32,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:49:32,449 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:49:32,450 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:49:32,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:49:32 BoogieIcfgContainer [2020-09-04 17:49:32,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:49:32,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:49:32,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:49:32,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:49:32,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:49:31" (1/3) ... [2020-09-04 17:49:32,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1661e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:49:32, skipping insertion in model container [2020-09-04 17:49:32,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:31" (2/3) ... [2020-09-04 17:49:32,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c1661e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:49:32, skipping insertion in model container [2020-09-04 17:49:32,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:49:32" (3/3) ... [2020-09-04 17:49:32,466 INFO L109 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2020-09-04 17:49:32,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:49:32,493 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:49:32,520 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:49:32,554 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:49:32,554 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:49:32,554 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:49:32,555 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:49:32,555 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:49:32,555 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:49:32,557 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:49:32,557 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:49:32,602 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-04 17:49:32,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 17:49:32,630 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:32,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:49:32,632 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:32,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:32,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1056406919, now seen corresponding path program 1 times [2020-09-04 17:49:32,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:32,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109655358] [2020-09-04 17:49:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:32,718 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:49:32,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109655358] [2020-09-04 17:49:32,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:32,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-04 17:49:32,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82794646] [2020-09-04 17:49:32,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-04 17:49:32,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:32,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-04 17:49:32,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:49:32,825 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-09-04 17:49:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:32,857 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-09-04 17:49:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-04 17:49:32,859 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-09-04 17:49:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:32,870 INFO L225 Difference]: With dead ends: 57 [2020-09-04 17:49:32,871 INFO L226 Difference]: Without dead ends: 38 [2020-09-04 17:49:32,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-04 17:49:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-04 17:49:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-04 17:49:32,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-04 17:49:32,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-09-04 17:49:32,925 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 17 [2020-09-04 17:49:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:32,926 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-09-04 17:49:32,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-04 17:49:32,926 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-09-04 17:49:32,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 17:49:32,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:32,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:49:32,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:49:32,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:32,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:32,929 INFO L82 PathProgramCache]: Analyzing trace with hash -588270500, now seen corresponding path program 1 times [2020-09-04 17:49:32,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:32,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386215969] [2020-09-04 17:49:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:32,932 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:49:32,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:49:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:49:32,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:49:32,992 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:49:32,993 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:49:32,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:49:33,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:49:33 BoogieIcfgContainer [2020-09-04 17:49:33,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:49:33,015 INFO L168 Benchmark]: Toolchain (without parser) took 1316.01 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 102.0 MB in the beginning and 140.5 MB in the end (delta: -38.5 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:49:33,016 INFO L168 Benchmark]: CDTParser took 1.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:49:33,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.51 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:49:33,019 INFO L168 Benchmark]: Boogie Preprocessor took 121.61 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.2 MB in the beginning and 180.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:49:33,020 INFO L168 Benchmark]: RCFGBuilder took 338.07 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 164.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-09-04 17:49:33,021 INFO L168 Benchmark]: TraceAbstraction took 554.62 ms. Allocated memory is still 200.8 MB. Free memory was 163.9 MB in the beginning and 140.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:49:33,025 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.51 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 92.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.61 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.2 MB in the beginning and 180.8 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.07 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 164.6 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 554.62 ms. Allocated memory is still 200.8 MB. Free memory was 163.9 MB in the beginning and 140.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x,y,z,w; [L15] EXPR w = 0 [L15] EXPR z = w = 0 [L15] EXPR y = z = w = 0 [L15] x = y = z = w = 0 [L16] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L31] CALL __VERIFIER_assert(x >= 4 && y <= 2) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...